Chair-seat machine



(No Model) 1 W. LAMSON.

CHAIR SEAT MACHINE.

No. 299,990. Patented June 10, 1884.

WITNESSES -//VVE/VTOS A I Afforney UNITED STATES PATENT rrrcn.

CHAlR-SEAT MACHINE.

SPECIFICATION forming part of Letters Patent No. 299,990, dated June 10, 1884.

Application filed September 4, 1883. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM F. LAMSON, of Detroit, county of Wayne, State of Michigan, have invented a new and useful Improvement in Seat-Hollowing Machines; and I de' clare the following to be a full, clear, and enact description of the same, such as will enable others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings, which form a part of this specification.

My invention consists in the combination of devices and appliances hereinafter specified, and. more particularly pointed out in the claims.

In the drawings, Figure 1 represents a front elevation of a device embodying my invention, with parts broken away; Fig. 2, a side View with a portion of the frame removed. Fig. 3 is a plan view of the tilting table.

The object of my invention is to provide an improved machine for hollowing and shaping the upper surface of. wooden seats for all kinds of wooden-seat chairs-a machinesimple in its construction, efficient in its operation, and rapid in its execution. I accomplish this object as follows: V

In the drawings, A represents any supporting-frame, provided with a suitable table, a.

B represents the oscillating pendulum-frame, said frame suspended in any desired manner, so that its lower end may swing backward and forward in the arc of a circle. As shown in the drawings, said oscillating frame is suspended upon a shaft, 12, journaled in the fixed frame A, said shaft provided with a drivingpulley, G. I would have it understood that I do not limit myself, however, to any particular manner of suspending said shaft b, as it may be suspended in any manner by which a swinging motion may be had. It may be suspended either in a vertical, inclined, or horizontal position.

. D is a revolving cylinder, properly secured to the lower end of said oscillating frame.

d represents one or more cutters or knives attached to the revolving cylinder, said knives being of any desired shape.

E- represents one or more belts, properly mounted upon the shaft b, and upon the revolving cylinder by which the cutters are rotated. Said cutters, however, may be rotated by any other suitable mechanism, if preferred. The revolving cylinder, with its cutters at the free end, may be caused to traverse the work by any proper mechanismas, for instance, by a compound hand-lever, F, under the control of the operator.

G is the tilting table, attached to the table a by one or more pivotal bearings or centers, g. The seats G, which are to be shaped, are secured upon said tilting table by any suitable mcans.as, for instance,'by the slide H, operated by the hand-wheel h. The tilting ta- -ble is also connected to the pendulum-frame through the medium of a carrier, I, which is simply a bracket at or an extension of one side of thependulum-frame, adjacent to the edge of the tilting table, said carrier being provided at the inner side with a roller, J, arranged beneath the edge of the tilting table, and a roller or stud, j, arranged above the edge of the table, so that the edge of the table sets between the two rollers, and consequently when the pendulum-frame is oscillated the rollers act to raise and lower that edge of the table, thus rocking it on its bearings or centers 9, whereby the table is-caused to conform to the movement of the pendulum-frame, and a straight out of the knives is insured.

In order to elevate the work to the knives, any suitable mechanism may be employedas, for instance, upon the shaft K may be located a beveled gear, is, adapted to mesh with the gear L, which is provided with a screw shaft, 1, said screw-shaft provided with a suitable bearing, M. The shaft K is extended in such a manner that a wrench or crank may be secured thereto for the purpose of operating the screw-shaft with its intermediate gear, by which the table may be elevated, as desired. The shaft K may be provided with a duplicate screw-shaft and gear, located upon the opposite side of theshaft.

N is a suitable shaft by which the table may be securely held in any required position.

It is evident the tilting table might be employed and worked with a rack and gear, the knives being rotated in fixed bearings. I would have it understood that I'design to use the tilting table for the purpose herein specified with cutters operated in any proper manner. So, also, the knives might be stationary and the tilting table work to and fro under and oversaidknives and accomplishthe sameresult, and I hold the tilting table as coming within the scope of my invention whether it be fixed or movable.

What I claim is 1. The combination, in a machine for shap ing seats, ofa rocking table for holding the work, a frame carrying cutters, mechanism for moving the frame back and forth to cause the cutters to traverse the work, and devices connecting the moving frame with the table for rocking the latter as the frame moves back and forth.

2. In a machine for shaping wooden seats, the combination, with an oscillating frame provided with suitable cutters, of a tilting table, and mechanism for operating said cutters and for causing said cutters to traverse the work, substantially as described.

v3. In a machine for shaping wooden seats, the combination, with an oscillating pendulum-frame provided with suitable cutters, of a and tilting table G, located thereon, and adapted to be tilted to conform to the movement of the oscillating frame as the cutters traverse the work, and mechanism for driving said cutters and for causing the oscillating frame to trav erse the work, substantially as described. 7

5. The combination, with a fixed frame, of a table, a, mechanism by'which it may be adjusted, a tilting table secured to said table a by suitable pivotal bearings, an oscillating pendulum-frame provided with suitable bearings in said fixed frame, and connected with the tilting table by suitable carriers, said oscillating frame provided with rotary cutters and mechanism for operating the same, and means for causing the rotary cutters to traverse the work, the construction being such that the cut of the knives will be equalized and the table made to conform to the swing of the pendulum, substantially as described.

6. In a machine for shaping seats, the combination of a tilting table for holding the work, a frame carrying cutters, mechanism for moving the frame back and forth to cause the cutters to traverse the work, and means for continuously tilting the table by the movement of the frame carrying the cutters, substantially as described.

In testimony whereof I sign this specifica- WVitnesses:

N. S. WRIGHT, M. B. ODoGHnR'rY. 

